Home / 11,621.97-17,383.70-7,882.20

Finding the Fourth Proportional to 11,621.97, 17,383.70 and 7,882.20

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Solution

The fourth proportional to 11,621.97, 17,383.70 and 7,882.20 is: 11,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.97 : 17,383.70 = 7,882.20 : x
  2. Step 2: Convert to fraction form
    11,621.97/17,383.70 = 7,882.20/x
  3. Step 3: Cross multiply
    11,621.97x = 17,383.70 × 7,882.20
  4. Step 4: Simplify right side
    11,621.97x = 137,021,760.73
  5. Step 5: Solve for x
    x = 137,021,760.73/11,621.97
  6. Step 6: Final answer
    x = 11,789.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.